#!/usr/bin/env node

/**
 * Module dependencies.
 */
let http = require('http');
/**
 * Get port from environment and store in Express.
 */

let port = '3000';
let app = require('./app');
app.set('port', port);

/**
 * Create HTTP server.
 */

let server = http.createServer(app);

/**
 * Listen on provided port, on all network interfaces.
 */

server.listen(port);
server.on('error', onError);
server.on('listening', onListening);

/**
 * Normalize a port into a number, string, or false.
 */

// function normalizePort(val) {
//   let port = parseInt(val, 10);

//   if (isNaN(port)) {
//     // named pipe
//     return val;
//   }

//   if (port >= 0) {
//     // port number
//     return port;
//   }

//   return false;
// }

/**
 * Event listener for HTTP server "error" event.
 */

function onError(error) {
  if (error.syscall !== 'listen') {
    throw error;
  }

  let bind = typeof port === 'string' ? 'Pipe ' + port : 'Port ' + port;

  // handle specific listen errors with friendly messages
  switch (error.code) {
    case 'EACCES':
      console.error(bind + ' requires elevated privileges');
      process.exit(1);
      break;
    case 'EADDRINUSE':
      console.error(bind + ' is already in use');
      process.exit(1);
      break;
    default:
      throw error;
  }
}

/**
 * Event listener for HTTP server "listening" event.
 */

function onListening() {
  let addr = server.address();
  let bind = typeof addr === 'string' ? 'pipe ' + addr : 'port ' + addr.port;
  console.log('Listening on ' + bind);
}
